#include <stdio.h>
#include <stdlib.h>

int main()
{
    printf("add: %d\n", add(2,7));

    printf("sub: %d\n", sub(9,2));

    printf("mul: %d\n", mul(3,2));

    printf("dive: %d\n", dive(8,2));
    
    exit(0);
}

